Sorry, an error occurred while trying to retrieve your information from PayPal

We have setup a WordPress website with WooCommerce using PayPal as payment gateway. When using Sandbox mode everything works, but when going live, the payment doesn’t go trough. There is an error message saying “Sorry, an error occurred while trying to retrieve your information from PayPal. Please try again.” We have tried to pay with a PayPal account and with credit card. We have now tried to use the default WordPress theme, disabled all plugins except WooCommerce and PayPal. Still the same problem. Two weeks ago we setup two other eCommerce shops with the same WordPress theme, WooCommerce and PayPal as gateway. Both works fine. The only difference between those and this one is the hosting. https://minecraftapkmod.net/ Thanks